摘要
根据天津地区的气候条件,建立了太阳能-地源热泵多热源供热系统模型。利用TRNSYS软件对该系统进行了模拟研究,分析了系统用能情况及运行过程中地温的变化,着重对运行策略进行了研究。基于系统的性能系数选定的控制策略为:集热器出口与水箱出口温差大于15℃时启动集热,当温差小于2℃时停止集热;水箱出口温度高于50℃时启动储热,土壤进出口水温差不足5℃时停止储热。
Establishes a solar-ground source heat pump system model according to the climatic conditions in Tianjin.Carries out a simulation study of the system based on TRNSYS program,analyses the energy consumption of the system and the ground temperature change,and studies the operation strategy with emphasis.Selects an appropriate operation strategy based on the coefficient of performance（COP） of system,i.e.to turn on the solar collection pump as the temperature difference between collector outlet and tank outlet is higher than 15 ℃,and to turn off the pump until it is less than 2 ℃,and to turn on the solar storage pump when tank outlet temperature is higher than 50 ℃,and to turn off it until the temperature difference between inlet and outlet of the borehole heat exchanger is less than 5 ℃.
出处
《暖通空调》
北大核心
2012年第12期83-87,共5页
Heating Ventilating & Air Conditioning
基金
天津市科技支撑计划重点项目(编号:PEG200701)
河北省自然科学基金项目(编号:E2008000063)
关键词
太阳能
储热
地源热泵
运行策略
模拟
solar energy
heat storage
ground-source heap hump
operation strategy
simulation
